US Bridges

Byron Road over Black River

Fair

Ottawa County, Michigan · 0.83 Miles E of 84th Ave · Structure no. 000000000008810

Built
1980
45 years old, rebuilt 2022
Condition
Fair
inspected July 2024
Type
Box Beam or Girders - Single or Spread
Steel
Length
80 ft
2 main spans
Daily traffic
8,100
2020 count
Owner
County
County Highway Agency

About this bridge

Byron Road over Black River is a steel box beam or girders - single or spread carrying Byron Road over Black River in Ottawa County, Michigan. It was built in 1980 and reconstructed in 2022, so it is 45 years old, younger than the Michigan average of 48.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 8,100 vehicles a day, roughly 5% of them trucks, projected to reach 10,611 by 2040. The structure is 80 ft (24.4 m) long and 42 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesByron Road
CrossesBlack River
Location0.83 Miles E of 84th Ave
RouteCounty Highway 7010
CountyOttawa County
StateMichigan
Coordinates42.81219, -85.97328
Functional classUrban Minor Arterial

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure8 Very GoodNo problems noted.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating107.1 US tons
Inventory rating86.8 US tons

Structure

Structure typeBox Beam or Girders - Single or Spread
MaterialSteel
DeckConcrete, cast-in-place
Main spans2
Design loadGreater than HL 93
Structure length80 ft (24.4 m)
Longest span38 ft (11.6 m)
Deck width42 ft (12.9 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic8,100 (2020)
Projected traffic10,611 by 2040
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Byron Road over Black River built?

It was built in 1980, making it 45 years old in 2025. It was reconstructed in 2022.

What condition is Byron Road over Black River in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in July 2024.

How much traffic does Byron Road over Black River carry?

About 8,100 vehicles per day (2020 count), of which roughly 5% are trucks.

How long is Byron Road over Black River?

The structure is 80 ft (24.4 m) long with a longest span of 38 ft (11.6 m) and a deck 42 ft wide.

Who owns Byron Road over Black River?

It is owned by the County Highway Agency.